.main {
    width: 400px;
    height: 300px;
    display: block;
    margin: 180px auto;
    border: 1px solid blue;
}
.main .title{
    font-size: 24px;
    height: 30px;
    width: 100%;
    line-height: 30px;
    margin: 30px 30px 0px 0px;
    text-align: center;  
    color: blue;
}
.main .login_form {
    width: 100%;
    text-align: center;
}
.main .login_form .item{
    padding-left: 0%;
}
.main .login_form  .inp {
    width: 75%;
    height: 30px;
    outline: none;
    margin: 5px 0px;
}

.remember {
    font-size: 12px;
    display: flex;
    margin: 10px 0;
    padding-left: 10%;
    height: 20px;
    line-height: 20px;
}
.login_btn {
    width: 60%;    
    height: 40px;
    border-radius: 5px;
    background-color: blue;
    border: none;
    margin-top: 10px;
    color: white;
    margin: 0 auto;
}